Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
OUR ORDOVIKE THE BEST IN THE WORLD
Regularly model airplanes-conovici come to the world Championships, to hundreds of athletes to identify the most strong, the most experienced craftsmen. Last year the venue was the...
DECIMATED “BREEZE”
Well the classics! Out beyond the outskirts, in places reserved, the endless expanse, the grass is high, the breeze fresh. All poetic mood adjusts. Here is born: "mow, scythe, while...
